The calculated distance (air line) between Potchefstroom and Viljoenskroon is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Viljoenskroon is certainly longer, as only the direct route (as the crow flies) between Potchefstroom and Viljoenskroon has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles